Electric bell or ringer.



O. R. ALBERTUS.

ELECTRIC BELL 0R RINGER.

APPLICATION FILED JAN.17, 1908.

1,041,943. Patented 0ct.22,1912.

7Z4 fig q '71 UNITED STATES PATENT @FFTQE.

CARL R. ALBERTUS, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS,TO AMERICAN ELECTRIC COMPANY, A CORPORATION OF ILLINOIS.

ELECTRIC BELL OR RINGER.

Specification of Letters Patent.

Patented Uct. 22,1912.

Application filed January 17, 1908. Serial No. 411,234.

To all whom it may concern:

Be it known that I, CARL R. ALBnRTUs, a citizen of the United States ofAmerica, and resident of Chicago, Cook county, Illinois, have invented acertain new and useful Improvement in Electric Bells or Ringers, ofwhich the following is a specification.

My invention relates to electric bells or ringers, such, for example, asthose more commonly used in connection with telephones.

The principal object of my invention is to provide a bell or ringer inwhich the mechanism for adjusting the gongs relatively to the striker isso located or disposed that it is accessible without entering the usualbox or casing by which the electromagnets or other parts of the ringerare usually inclosed.

Another object is to provide a simple and improved mechanism foradjusting the gongs of the ringer.

It is also an object to provide certain details and combinations andfeatures of improvement tending to increase the general efiiciency of anelectric bell or ringer of this particular character.

To the foregoing and other useful ends, my invention consists in mattershereinafter set forth and claimed.

In the accompanying drawings,Figure 1 is a vertical sectional view online 1-1 in Fig. 2, showing an electric bell or ringer embodying theprinciples of my invention, and illustrating the manner in which theadjusting mechanism for the gongs is arranged outside of the box orcasing. Fig. 2 is a vertical section on line 2-2 in Fig. 1. Fig. 8 is adetail section on line 33 in Fig. 1. Fig. 4 is a detail section on line4-4; in Fig. 1. Fig. 5 is a perspective of one of the mountings for thegongs.

As thus illustrated, my invention comprises a pair of electromagnets A,a pair of permanent magnets B connected with the cores of saidelectromagnets, and an upper bracket plate C by which the said magnetsare connected together. A polarized armatureD is supported on atorsional spring d, which latter is secured to an adjustable yoke (Zsuitably held on threaded posts (Z The said armature carries a rod orarm cl, which latter has a hammer or striker 61 at its upper end, thesame being disposed between the two gongs E. It will be seen that thebracket plate C is secured to a mounting plate F, which latter ispreferably rectangular in form or shape, and secured in any suitablemanner to the top or upper surface of the box or casing Gr, asillustrated. The said mounting plate F is provided with upturned ears orlugs f, a pair of said ears or lugs being disposed at each side of thestriker (Z In each pair of ears or lugs there is mounted a micrometeradjusting screw the same being suitably held against endwise movement,but being free to rotate within the bearings provided by the said earsor lugs. The two gong mountings H are formed with feet 71 which bearupon and slide along the smooth upper surface of the plate F, and arealso provided with downwardly extending portions 71- having threadedopenings if. It will be seen that the screws f extend through the saidthreaded openings 7L2, so that any rotation of said screws isnecessarily accompanied by a traveling movement thereon of the said gongmountings 11. Each gong mounting is also provided at its top or summitwith an opening its, in which is secured a post h It is to the tops ofthese posts h that the gongs E are secured by screws if, in the mannershown. The said screws f are provided with slotted heads P, which areadapted to receive a screw driver, whereby the screws are turned for thepurpose of adjusting the gongs toward and away from the striker (Z inorder to obtain the desired results.

From the foregoing, it will be seen that the mechanism for adjusting thegongs is located entirely outside of the box or casing by which themagnets of the ringer are in-- closed, which box-0r casing may be thatof the ordinary Wall telephone. With this an rangement, the prongs canbe adjusted without entering the box or casing of the telephone.Furthermore, the micrometer screws are calculated to afford very niceand delicate adjustment for the gongs, thereby insuring the bestresults.

WVhat I claim as my invention is: mountings, and means for sounding theAn electric bell or ringer comprising a gongs. 10 base plate providedwith upturned lugs, Signed by me at Chicago, 111., this 27th axiallyailined micrometer screws ro-tatably day of Nov. 1907. mounted on saidlugs mountings carried on CARL R. ALBERTUS. said screws and providedwith feet bearing Witnesses: upon and adapted to slide along the smoothH. P. CLA'UsnN, surface of said plate, gongs carried by said A. R.Roosn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

